【正确答案】 D

【答案解析】[听力原文]
About 10 percent of Europe"s present-day population seems to be resistant to HIV -- a significantly higher proportion than on other continents. Researchers have traced this immunity to a genetic mutation that seems to have appeared some 2,500 years ago, and that protects white blood cells against penetration by HIV. From the mid-14th century through the 17th century the prevalence of the mutation increased, in tandem with repeated outbreaks of the plague. The researchers suggest that the mutation protected against the disease, which culled the population of people who lacked it.

[分析] 逻辑关系的找寻和判断。
原文一开始便指出当今欧洲有大约10％的人口对HIV有免疫力。然后指出Researchers have traced this immunity to a genetic mutation that seems to have appeared some 2,500 years ago，and that protects white blood cells against penetration by HIV. 即经研究发现该免疫力来自一种基因突变，该突变在2500年前便已产生，这种基因突变可保护白血球免于 HIV的穿透。由此可见，D项与原文相符，是正确答案。
[解题关键] 掌握篇章结构形成的意义上的内在逻辑，支持性细节往往具体说明或解释主题。

【正确答案】 D

【答案解析】[听力原文]
US, Australian, and New Zealand scientists report in the journal Lancet that nine factors that people and societies can control cause nearly 2.5 million cancer cases each year. That is about one-third of the seven million annual global total. Leading the list of causes is smoking, which the researchers say is responsible for 20 percent of preventable cancers. Alcohol use and low consumption of fruits and vegetables cause another five percent each. Also significant are overweight and obesity, physical inactivity, urban air pollution, indoor smoke from household cooking, contaminated injections in health clinics, and unsafe sex.

[分析] 数字信息的找寻和判断。
关于preventable cancer，原文认为Alcohol use and low consumption of fruits and vegetables cause another five percent each 即喝酒和水果蔬菜吃得少各占5％的原因，经过简单加法计算可判断D项内容“水果蔬菜吃得少与喝酒”与原文相符，是正确答案。
[解题关键] 根据题干关键词正确找到相关信息，并进行简单的数字运算。

【正确答案】 B

【答案解析】[听力原文]
A recent report finds that the number of working hours in Asia has started to decline. But the economists say that what is needed is not only a reduction in working time, but also more flexibility in working hours. Both businesses and workers would profit if working hours can be adjusted according to demand, allowing workers to better control their days. And, as many economies in the region see a growth in service industries, such as hotels and restaurants, which need flexible work schedules, more flexibility could help boost growth.

[分析] 观点态度和找寻和判断。
关于经济学家的观点，原文认为But the economists say that what is needed is not only a reduction in working time，but also more flexibility in working hours. 根据上下文逻辑可知，not only 之后的内容承前，指一般性观点，而but also 之后的内容启后，表述经济学家的重要观点。由此可判断，工作时间更有弹性，是该句的中心内容。因此B项内、容与原文意思相符，是正确答案。
[解题关键] 1)段首处but之后的内容往往是全段中心内容。2)段落中的中心词，包括其词形变化形式往往频繁出现，如段首中心句中的中心词flexibility 及其形容词 flexible在该段出现若干次。

【正确答案】 A

【答案解析】[听力原文]
On September 13,1956, IBM shipped the first unit of the RAMAC, in other words, Random Access Method of Accounting and Control. The RAMAC, designed in Big Blue"s San Jose, Calif., research center would have made a lousy music player. The drive weighed a full ton, and to lease it you"d pay about ＄250,000 a year in today"s dollars. Since it required a separate air compressor to protect the two moving "heads" that read and wrote information, it was noisy. The total amount of information stored in its 50 spinning iron-oxide-coated disks-- each of them a pizza-size 24 inches -- was 5 megabytes.

[分析] 事实细节的找寻和判断。
根据原文The RAMAC，designed in Big Blue"s San Jose，Calif.，research center 可知B项中The IBM research center与原文不符，C中24 spinning disks 与原文its 50 spinning... disks不符，D中＄260，000与原文to lease it you"d pay about ＄250,000 a year in today"s dollars 不符，因此均被排除。而A与原文The drive weighed a full ton 相符，因此该项为正确答案。
[解题关键] 根据各选项中关键词定位到原文相关信息，将选项内容与原文比较。有时可根据选项内容的特点，先排除干扰项，最后剩下的选项即为正确答案。如本题中B、 C、D三项内容均含有易识别信息，如专有名词或数字等，很容易定位其原文中相关信息以判断正误。

【正确答案】 A

【答案解析】[听力原文]
A study done in Greece says people can live longer and healthier lives if they eat what is known as the Mediterranean diet. Such a diet generally gets about 40 percent of its calories from olive oil and other fats that are considered healthy. Researchers from the University of Athens and Harvard University Medical School in Boston, Massachusetts did the study. They published the results in the New England Journal of Medicine. Researchers say it is all the foods together in the Mediterranean diet that make the difference. So they say people should eat a lot of fruits, vegetables, beans and fish. And they should use olive oil in their cooking.

[分析] 特定信息的找寻和判断。
有关参与研究的机构，原文相关信息是Researchers from the University of Athens and Harvard University Medical School in Boston，Massachusetts did the study. 由此可知，只有 A项中的New York 未被提到，因此该项是正确答案。
[解题关键] 根据选项特点，侧重听原文中的相关信息。本题中选项均为地点专有名词，因此在听的过程中应侧重听与地点有关的内容。